Improvement in thrashing-machines



I), LiPPY &j s BLYMYER. ZSheetsH-SheetL Thrashing-Machines.

No. 137,695. Patented A rilanws.

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Thrashing-Machines.

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UN E STATES DAVIDLIPPY ANDJOHN S. BLYMYER, OF MANSFIELD, OHIO.

IMPROVEMENT IN THRASHlNG-MACHINES.

Specification forming part of Letters Patent No. 137,695, dated April 8,1873; applfcation filed June 13, 1870.

N atnre and Objects of the Invention.

Our invention relates to the employment of a counter-cylinder incombination with the revolving toothed cylinder, presenting a convexsurface to the surface of the latter in lieu of a toothed plane orconcave, such as has been commonly used; also to dividing-plates at theentrance to the cylinder; also to anti-friction rollers at the ends ofthe rakes; also to the construction of the teeth of the rakes; also tothe method of operating the heaters; also to vibrating bars, asexplained; also to connectin g the bottom board under the cylinder withthe bottom board under the separator, so that both are vibrated orshaken by one system of mechanism 5 also to the mode of operating thetoothed separator for the tailings; also to a peculiar and novelband-cutter.

Description of Accompanying Drawing.

Figure 1 is a top view of a thrasher, separator, and cleaner in whichour improvements are embodied, the top boards being removed to displaythe working parts. Fig. 2 is a side elevation of same. Fig. 3 is a topView of screen and separator for tailings. Fig. 4 is a longitudinalsectional elevation of the machine. Fig. 5,is a side elevation, reverseof side represented in Fig. 2. Fig. 6 is a transverse section on anenlarged scale through the separator, showing straw, rakes, and shakers.

the counter-cylinder. Fig. Sis a side elevation of the reversiblegrain-spout.

General Description.

A is the frame-work and outer casin g of the machine; 13,, the revolvingtoothed cylinder by which the grain is stripped from the straw. U is acounter-cylinder, which we have pro vided in lieu of the toothed concaveheretofore used in thrashers. This cylinder presents a convex surface tothe action of the revolving cylinder, thus diminishing greatly theresistance to the passage of straw through the machine, while at thesame time it produces an appropriate and an adequate resistance, so thatthe grain is thoroughly stripped from the straw. Moreover, this cylindermay be supported in journals and rotated to present new and differentsurfaces to the action of the re volvin g cylinder adapted to differentkinds or conditions of the grain; or, if a uniform cylinder is used,itmay be left free and allowed to revolve temporarily in case the feedshould be excessive, or any substance enter offering an undueobstruction to the motion of the revolvin g toothed cylinder, thusaffording a practical security against clogging and diminishing greatlythe risks of accident and injury which attend the use of these machinesbut it is not intended that the counter-cylinder shall have any motionwhile the machine is in operation other than that which occursincidentally, and occasionally resulting from the action of theworking-cylinder when an undue resistance is present. The counter-cy1-inder may consist of a series of plain or serrated disks or of a toothedcylinder, and its freedom of motion may be controlled by a temper-screw,as at a, Fig. 2. D is a movable feed-board, placed at the throat of themachine, upon which are placed adjustable dividingplates 6, by which thestraw is separated and caused to enter the machine more evenly andappropriately. E is the separator, composed of rakes c with teeth 0,heaters 61, vibrating bars c with teeth e, and dividing-rails k. Thelower or front end of the rakes are carried by cranks formed incontinuous shaft f,- the rear ends have each a transverse'pin prolongedthrough uponeither side carrying small antifriction rollers g, whichwork in oblique ways or grooves h, these being formed in blocks";recessed appropriately to form with the movable cap e" the ways orgrooves. The rollers at the'end of the rakes, and working in their ways,permit the rakes to be reciprocated even when elevating and conveyingstraw with very little friction. The teeth 0' upon the rakes are forked,as represented in Fig. 4, by which they lift and loosen the straw at thesame time that they convey it to the rear, thus causing the grain to bemore perfectly separated. The beaters d linked to and carried by rakes 0have a pin, d, passing through them a short distance from theirlinkedend, and projecting so far on either side as to encounter thedividing-rails k, the construction and arrangement being such that asthe rakes descend and recede after a forward movement these pinsencounter the rails, and the free ends are suddenly and violentlyraised, beating the straw from below and serving to separate graintherefrom. The vibrating bars 0 are pivoted at either end, and thesealso have pins 0 passing through them and beyond the dividing-rails 70into the track of the rakes 0, the construction and arrangement beingsuch that as the rakes are operated and ascend performing their rearwardstroke they encounter these pins, alternately upon opposite sides, andcommunicate a sharp vibrating motion, thus disturbing and violentlyagitating the straw in a lateral direction. F is the bottom board underthe cylinder, and F the bottom board under the separator, which receivethe grain and conduct it toward the blast. They are held in theirposition by elastic corner-supports I, but so that they are free tovibrate, the vibrations being produced by rod m from vibrating bar n,operated by rod m, the latter extending from bell-crank n, which derivesits motion from crank-rod m", operated by crank-wrist upon pulley 0.These bottom boards F F are connected together by connecting-bars p, andare thus both shaken or vibrated by one system of mechanism, as abovedescribed. G is the fan. The openings q in case A, through which air isadmitted, are protected by an outer case or hood, H, so constructed andarranged as to prevent the entrance of straw and trash, but withoutexcluding air.

The grain havlng been separated and cleaned falls through screen 1" uponbottom board S, and thence descending falls into grain-spout t. Thisspout is supported by a pivot centrally, and may be vibrated and setwith an inclination in either direction, and thus made to discharge thegrain on either side of the machine. The tailings, straw, andchafl-inclosed grain which pass over the surface of the screen rdischarge upon toothed bar a, carried by the screen-frame, and vibratinglaterally with it, but it is also free to vibrate upon its axis. 8,Fig. 3, is an axial rod prolonged from one end of a and bent at a rightangle at its outer extremity, and so arranged in contact with inclinesupon the upper edge of upright plate 20 that as the bar a is carriedback and forth laterally by the screen-frame it is also caused by theinclines to vibrate upon its axis, thereby separating grain from thestraw and facilitating the escape of straw over the tailing-board, thegrain falling into tailing-spout o and the straw escaping over upon thefloor.

At the front of the machine, and at the side table I, is a band-cutter,K, consisting of two series of reaper-knives, 00 0c, the formerstationary and the latter carried by a reciproeating bar, y, operated bya pitman-rod, z, from a crank-wrist carried by shaft j.

The construction and arrangement of this device is such that when abundle of grain is thrown appropriately upon the side table its band isinstantly severed by the cutters.

It would be appropriate as a protection to the hands of the operator tohave the side table supported upon springs which could be depressed byforce, temporarily exposing the bands to the action of the cutters, butwhich would elevate the table instantly and support it above the pointsof the cutters upon the removal of the temporary pressure.

We claim as our invention- 1. The combination, in a thrashing-machine,of the revolving cylinder B and the loose cylinder 0, arranged tooperate substantially as described.

2. The cylinder 0, arranged loosely in its bearings and disconnectedfrom the operating mechanism, whereby it is permitted to receive anincidental motion from the friction of the straw as it is fed into themachine, and may also be clamped fast and adjusted so as to bringdifferent parts of its periphery into operation, substantially asdescribed.

3. In combination with the revolving cyliir der B, the feed-board Dhaving dividing-plates 12, substantially as and for the purpose speci'4. The reciprocating rakes 0 having their rear ends supported onfriction-rollers, substantially as described.

5. The beaters d, linked to and carried by the rakes O, substantially asdescribed.

6. In combination with rakes 0, the vibrating bars 0, constructed,arranged, and operating substantially in the manner and for the purposespecified.

7. The bottom-boards F and F, connected and arranged substantially asdescribed, whereby both are operated together and by the same means ordriving power, as set forth.

8. The toothed bar 14, arranged to vibrate on its axis in a verticalplane, and also horizontally, substantially as herein described.

9. The band-cutter K, consisting of the series of stationary cutters andthe series of reciprocating cutters, arranged on the feeding table andoperated from the mechanism of the machine, substantially as described.

DAVID LIPPY.

Witnesses: J. S. BLYMYER.

ABEL R. PRoeToR, Guns. H. FIsIc.

